Scientific equipment

Vials & caps

Markes supplies a range of vials and caps to support users undertaking headspace (HS), solid-phase micro-extraction (SPME), thin-film SPME (TF-SPME) and HiSorb sorptive extraction sampling. Vials are available in 1.5, 10 and 20 mL sizes, with crimp-tops or screw-tops. Caps to suit sampling method(s) are provided with the appropriate septum.

- Decapper and crimping tools available for use with crimp-top vials

- 5 mL vials available in clear and amber glass

- Caps for 10/20 mL vials are magnetic, to enable automated handling by the Centri robot

Read more: Sample extraction supplies catalogue

Vac- HeadSpace, SPME, SPME Arrow caps

 Vac- HeadSpace, SPME, SPME Arrow caps (closures) are designed to improve your headspace and SPME analyses. The closures offer a gastight seal to 20 mm crimp top headspace vials with a long neck over a long period of time and during operation. The metallic body of the closure has magnetic properties to allow easy handling by the Centri autosampler, without using additional magnetic caps.

- Easy to use and implement in any routine laboratory

- Reusable caps, reducing laboratory waste and extra costs

- Closures are also ideal for sample storage at atmospheric pressure without losing volatile analytes e.g., during long waiting times on an autosampler tray

Read more: Instruction for use - Vac SPME Fiber-Arrow

TF SPME

TF-SPME (thin-film solid-phase microextraction) is a novel sampling approach for ultra-trace-level analysis of VOCs and SVOCs using sorptive extraction. TF-SPME uses a carbon mesh strip impregnated with a sorptive phase with 100× greater volume than a typical SPME fiber.

- Applicable to a wide range of compound classes

- Environmentally friendly and solvent-free

- Split-flow re-collection on compatible instruments enables repeat analysis under different split conditions for analysis over a wide concentration range

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TF-SPME flyer

Thin Film SPME Instruction for use

SPME fibers

Sorptive extraction is a convenient approach for complex samples and for monitoring persistent organic pollutants in foods, beverages and other products derived from natural sources. In SPME, (solid-phase microextraction) fibers are coated with absorptive phase(s), to extract volatiles in either headspace or immersive modes.

- Compared with static headspace, SPME can offer improved selectivity and concentration capability

- A variety of sampling phases are available to extend the applicability of SPME over a range of target analytes

- SPME can be extended to SPME–trap with the Centri sample extraction and enrichment platform